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Implement rounding mode for cvt.w.fmt instructions

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Mr-Wiseguy 2023-03-02 22:50:47 -05:00
parent d994bd381d
commit e90f9974ba
1 changed files with 34 additions and 3 deletions
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37
include/recomp.h
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@ -137,12 +137,43 @@ static inline gpr do_lwl(uint8_t* rdram, gpr offset, gpr reg) {
#define TRUNC_L_D(val) \ #define TRUNC_L_D(val) \
((int64_t)(val)) ((int64_t)(val))
// TODO rounding mode #define DEFAULT_ROUNDING_MODE 0
static inline int32_t do_cvt_w_s(float val, unsigned int rounding_mode) {
switch (rounding_mode) {
case 0: // round to nearest value
return (int32_t)lroundf(val);
case 1: // round to zero (truncate)
return (int32_t)val;
case 2: // round to positive infinity (ceil)
return (int32_t)ceilf(val);
case 3: // round to negative infinity (floor)
return (int32_t)floorf(val);
}
assert(0);
return 0;
}
#define CVT_W_S(val) \ #define CVT_W_S(val) \
((int32_t)(val)) do_cvt_w_s(val, rounding_mode)
static inline int32_t do_cvt_w_d(double val, unsigned int rounding_mode) {
switch (rounding_mode) {
case 0: // round to nearest value
return (int32_t)lround(val);
case 1: // round to zero (truncate)
return (int32_t)val;
case 2: // round to positive infinity (ceil)
return (int32_t)ceil(val);
case 3: // round to negative infinity (floor)
return (int32_t)floor(val);
}
assert(0);
return 0;
}
#define CVT_W_D(val) \ #define CVT_W_D(val) \
((int32_t)(val)) do_cvt_w_d(val, rounding_mode)
#define NAN_CHECK(val) \ #define NAN_CHECK(val) \
assert(val == val) assert(val == val)